BUG soft lockup CPU#0 stuck for 80s [hald-addon-stor:2039]

[paulus]

Running Debian Linux with Guest additions on Windows XP host. Have both fixed and transient shared folders.

Use multiple SSH (Windows) clients to access VirtualBox.

When starting up two disk intensive background jobs in one shell, when trying to do TAB-completion on a filename on a shared directory on the other shell, the shell hangs. Doing the same with a third shell will hang it too. A fourth shell that had Emacs running still responded to the Emacs commands, but after exiting it, and trying a 'ps' that one hung too.

In the console window I saw the above message [57723.988341] BUG soft lockup CPU#0 stuck for 80s [hald-addon-stor:2039]

When I tried to login on the console, I saw the 'welcome' message, but after that the console hung too.

VirtualBox itself did not crash, I could still pause/resume the Debian VirtualBox.

[paulus]

One more remark: when not paused, the VirtualBox Debian box had "100%" processor load (which on my host P4HT means 50% host machine load)